Device for producing aerosols



Dec. 17, 1946.

L. D. GOQDHUE DEVICE FOR PRODUCING AEROSOLS Filed Dec. 8, 1945 LYLE n.codmruE Patented ec. 17, B946 2,412,728 psvros FOR raonucnvc 'AERosoLsLyle D. Gooclhue, Berwyn, Md., assignor to United States of America asrepresented by Claude R. Wickard, Secretary of Agriculture, and hissuccessors in office Application December 8, 1943, Serial No. 513,400

(Granted under the act of March 3, 1883, as

4 Claims.

This application is made under the act of March 3, 1883, as amended bythe act of April 30, 1928 and the invention herein described and claimedif patented, may be manufactured and used byor for the Government of theUnited States of America for governmental purposes without the pay mentto me of any royalty thereon.

In United States Patent No. 2321,023, it is disclosed that parasiticidalaerosols can easily and conveniently be prepared by releasing to theatmosphere solutions of certain materials in liquefled gases held underpressure. An object of this invention is to provide an improved devicefor discharging aerosols.

The device of m invention is illustrated in the accompanying drawing, inwhich:

Figure l is an elevational view; and

Figure 2 is a section along the line 2-2 of Figure 1.

Referring with more particularity to the drawing, the numeral lldesignates the casing of the container formed of two sections l2 and i3,welded together at M, a dip tube l5 extending from the exterior of thecontainer through the top and terminating at a point near the bottomwithin the container. The liquid l6 within the container comprises asolution of a non-volatile parasiticlde dissolved in a gas underpressure-and may be any of the compositions hereinabove mentioned. Theouter end of the dip tube is provided with a seal ll of a material suchas a soft metal or an alloy, above which there is secured to the,

casing of the container a small cylindrical shell [8, threaded on theinside. A plug l9, threaded on the outside, is adapted to engage thethreads of the cylindrical shell I8. A conical shaped penetrator 20 issecured to the lower end of the plug I!) to contact and break the sealll when screwed down. Finger grips 2i are provided onthe plug l9 tofacilitate this operation. A smallhole or capillary 22 (preferably about0.020 of an inch in diameter) is disposed longitudinally through theplug H). A short piece of tubing 23 is removably disposed between thebottom of the plug I9 and the tube I5 to prevent accidental puncturingof the seal ll before initial use. When it is desired to use the device,the plug i9 is first taken out and the tubing 23 removed. The plug I9 isthen replaced and screwed down until the seal is broken by thepenetrator. The plug I9 is then retracted to permit escape of the liquidin the container through the hole 22. When it is desired to shut oilthis flow, the plug i9 is again screwed down to seat the penetrator 20in the opening previously made by it in puncturing the seal I1. Withthis arrangement, the container may be shipped after being filled withthe liquid under seal and. without danger of leakage. Furthermore, whenplaced in the hands of the user, dispersion of the liquid can becontrolled by simply manipulating the plug amended April 30, 1928; 3'100. G. 757) l9. Suitable resinous or other anti-leakage materials may beapplied to the threads between the cylindrical shell l8 and the plug I9to make the device operate more eficiently.

Having-thu described my invention, I. claim:

1. In combination, a hermetically sealed container, a dip tube extendingfrom the exterior to the interior of the container, a tubular memberabout the opening of the dip tube on the outside of and integral withthe container, a plug threadedly engageable with said tubular member, ayieldable seal in said dip tube, and a solid. penetrator attached tosaid plug for rupturing said yieldable seal, said plug having an escapehole longitudinally therethrough, the lower end of said hole beingradially ofiset from and non-contactable with that area of said sealwhich is rupturable by said penetrator.

2. In combination, a hermetically sealed container, a dip tube extendingfrom the exterior to the interior of the container, a tubular memberabout the opening of the dip tube on the outside of and integral withthe container, a plug threade'dly engaged with said tubular member, ayieldable seal in said dip tube, and a solid penetrator attached to saidplug for rupturing said yleldable seal and forming a seat therein forsaid penetrator, said seat and penetrator comprising a valve, said plughaving an escape hole longitudisaid Y eldable seal and thereby forming aseat.

therein for said penetrator, said seat and penetrator comprising avalve, said plug having an escape hole longitudinal therethrough, thelower end of said hole being radially offset from and non-contactablewith said portion.

4. In combination, a hermetically sealed con-.

tainer, a dip tube extending from the exterior to the interior of thecontainer, a tubular member about the opening of the dip tube on theoutside of and integral with the container, a plug threadedly engageablewith said tubular member. a yieldable seal in said dip tube, and a solidpenetrator attached to said plug for rupturing a portion of saidyieldable seal and thereby forming a seat therein for said penetrator,said seat and penetrator comprising a valve, said plug having an escapehole longitudinal therethrough, the lower end of said hole beingradially oflfset from and non-contactable with said portion, and aremovable spacer between said plug and said seal.

. LYLE D. GOODHUE.

